Inpatient Addiction Medicine Consultation and Post-Hospital Substance Use Disorder Treatment Engagement: a Propensity-Matched Analysis

The addiction consultation service for hospitalized patients with substance use disorder: An integrative review of the evidence

INTRODUCTION

The Addiction Consultation Service has emerged as a model of care for hospitalized patients with substance use disorder. The aim of this integrative review is to characterize the Addiction Consultation Service in general hospital settings, assess its impact on clinical outcomes, identify knowledge gaps, and offer guidance for implementation.

METHODS

We conducted an integrative review of studies from January 2002 to August 2023, applying specific inclusion criteria to collect study design, service characteristics, staffing models, utilization, and health outcomes. Additionally, a comprehensive quality appraisal was conducted for all studies considered for inclusion.

RESULTS

Findings from 41 studies meeting inclusion criteria were synthesized and tabulated. Study designs included six reports from three randomized controlled trials, five descriptive studies, and 30 observational studies. The most common study setting was the urban academic medical center. Studies evaluated the structure, process, and outcomes of the Addiction Consultation Service. A majority of studies, particularly those utilizing more rigorous designs, reported positive outcomes involving medication initiation, linkage to post-discharge care, and utilization outcomes.

CONCLUSIONS

The Addiction Consultation Service care model improves quality of care for hospitalized patients with substance use disorder. Additional research is needed to assess its effectiveness across diverse medical settings, determine the effectiveness of varying staffing models, demonstrate impactful outcomes, and establish funding mechanisms to support sustainability.

Addiction Consultation Services for Opioid Use Disorder Treatment Initiation and Engagement: A Randomized Clinical Trial

Importance

Medications for opioid use disorder (MOUD) are highly effective, but only 22% of individuals in the US with opioid use disorder receive them. Hospitalization potentially provides an opportunity to initiate MOUD and link patients to ongoing treatment.

Objective

To study the effectiveness of interprofessional hospital addiction consultation services in increasing MOUD treatment initiation and engagement.

Design, Setting, and Participants

This pragmatic stepped-wedge cluster randomized implementation and effectiveness (hybrid type 1) trial was conducted in 6 public hospitals in New York, New York, and included 2315 adults with hospitalizations identified in Medicaid claims data between October 2017 and January 2021. Data analysis was conducted in December 2023. Hospitals were randomized to an intervention start date, and outcomes were compared during treatment as usual (TAU) and intervention conditions. Bayesian analysis accounted for the clustering of patients within hospitals and open cohort nature of the study. The addiction consultation service intervention was compared with TAU using posterior probabilities of model parameters from hierarchical logistic regression models that were adjusted for age, sex, and study period. Eligible participants had an admission or discharge diagnosis of opioid use disorder or opioid poisoning/adverse effects, were hospitalized at least 1 night in a medical/surgical inpatient unit, and were not receiving MOUD before hospitalization.

Interventions

Hospitals implemented an addiction consultation service that provided inpatient specialty care for substance use disorders. Consultation teams comprised a medical clinician, social worker or addiction counselor, and peer counselor.

Main Outcomes and Measures

The dual primary outcomes were (1) MOUD treatment initiation during the first 14 days after hospital discharge and (2) MOUD engagement for the 30 days following initiation.

Results

Of 2315 adults, 628 (27.1%) were female, and the mean (SD) age was 47.0 (12.4) years. Initiation of MOUD was 11.0% in the Consult for Addiction Treatment and Care in Hospitals (CATCH) program vs 6.7% in TAU, engagement was 7.4% vs 5.3%, respectively, and continuation for 6 months was 3.2% vs 2.4%. Patients hospitalized during CATCH had 7.96 times higher odds of initiating MOUD (log-odds ratio, 2.07; 95% credible interval, 0.51-4.00) and 6.90 times higher odds of MOUD engagement (log-odds ratio, 1.93; 95% credible interval, 0.09-4.18).

Conclusions

This randomized clinical trial found that interprofessional addiction consultation services significantly increased postdischarge MOUD initiation and engagement among patients with opioid use disorder. However, the observed rates of MOUD initiation and engagement were still low; further efforts are still needed to improve hospital-based and community-based services for MOUD treatment.

Trial Registration

ClinicalTrials.gov Identifier: NCT03611335.

Impact of hospital-administered extended-release naltrexone on readmission rates for patients with alcohol use disorder

BACKGROUND AND AIMS

Alcohol use disorder (AUD) is a persistent public health concern, contributing significantly to mortality and morbidity. This study aims to evaluate the impact of in-hospital extended-release naltrexone (XR-NTX) administration on alcohol-related outcomes.

METHODS

This retrospective cohort study, conducted at an academic medical centre, included 141 adult patients with AUD who received XR-NTX between December 2020 and June 2021. Primary and secondary outcomes were assessed 90 days before and after XR-NTX administration to identify number of alcohol-related hospitalisations, emergency department (ED) visits and average length of hospital stay. Subgroup analyses assessed outcomes in high hospital utilisers and marginally housed or unhoused populations.

RESULTS

There was a significant decrease in ED visits and length of hospital stay post XR-NTX and no significant difference in the number of rehospitalisations. Subgroup analysis showed significant reduction in hospital readmissions and ED visits among high hospital utilisers. Our sample was a predominantly middle-aged, male and white patient population.

CONCLUSIONS

In-hospital initiation of XR-NTX for AUD was associated with a significant decrease in ED visits and length of hospital stay. While no significant impact on the number of hospitalisations was observed overall, there was a substantial reduction in hospital readmissions and ED visits among high utilisers. Our findings suggest the potential benefits of in-hospital XR-NTX, emphasising the need for further research to establish causal relationships, assess cost-effectiveness and explore effectiveness across diverse patient populations. Effective in-hospital interventions, such as XR-NTX, hold promise for improving patient outcomes and reducing the healthcare burden associated with AUD.

Opioid Overdose After Medication for Opioid Use Disorder Initiation Following Hospitalization or ED Visit

Importance

Hospitalizations related to opioid use disorder (OUD) represent an opportunity to initiate medication for OUD (MOUD).

Objective

To assess whether starting MOUD after a hospitalization or emergency department (ED) visit is associated with the odds of fatal and nonfatal opioid overdose at 6 and 12 months.

Design, Setting, and Participants

This population-based cohort study used data from the Oregon Comprehensive Opioid Risk Registry, which links all payer claims data to other administrative health datasets, for individuals aged 18 years or older who had diagnosis codes related to OUD recorded at an index ED visit or hospitalization from January 2017 to December 2019. Data were analyzed between May 2023 and January 2024.

Exposures

Receipt of MOUD within the 7 days after an OUD-related hospital visit.

Main Outcomes and Measures

The primary outcome was fatal or nonfatal overdose at 6 and 12 months after discharge. Sample characteristics, including age, sex, insurance plan, number of comorbidities, and opioid-related overdose events, were stratified by receipt or nonreceipt of MOUD within 7 days after an OUD-related hospital visit. A logistic regression model was used to investigate the association between receipt of MOUD and having an opioid overdose event.

Results

The study included 22 235 patients (53.1% female; 25.0% aged 25-39 years) who had an OUD-related hospital visit during the study period. Overall, 1184 patients (5.3%) received MOUD within 7 days of their ED visit or hospitalization. Of these patients, 683 (57.7%) received buprenorphine, 463 (39.1%) received methadone, and 46 (3.9%) received long-acting injectable naltrexone. Patients who received MOUD within 7 days after discharge had lower adjusted odds of fatal or nonfatal overdose at 6 months compared with those who did not (adjusted odds ratio [AOR], 0.63; 95% CI, 0.41-0.97). At 12 months, there was no difference in adjusted odds of fatal or nonfatal overdose between these groups (AOR, 0.79; 95% CI, 0.58-1.08). Patients had a lower risk of fatal or nonfatal overdose at 6 months associated with buprenorphine use (AOR, 0.50; 95% CI, 0.27-0.95) but not with methadone use (AOR, 0.57; 95% CI, 0.28-1.17).

Conclusions and Relevance

In this cohort study of individuals with an OUD-related hospital visit, initiation of MOUD was associated with reduced odds of opioid-related overdose at 6 months. Hospitals should consider implementing programs and protocols to offer initiation of MOUD to patients with OUD who present for care.

Hospitalists' Attitudes and Experiences With Posthospitalization Care Transitions for Patients With Substance Use Disorders: A Cross-sectional Analysis

BACKGROUND

Medical hospitalizations are relatively common among individuals who have substance use disorders (SUDs) and represent opportunities for patient engagement and treatment. Posthospitalization transitions of care are an important element of providing full-spectrum inpatient SUD care; however, little is known about clinicians' experiences with postdischarge care transitions.

METHODS

We conducted a cross-sectional study surveying hospital-based medical clinicians (ie, "hospitalists") across 2 large health systems in the state of Utah to assess current practices, barriers, facilitators, and perceptions toward posthospitalization care transitions for patients with SUDs. We used Wilcoxon signed-rank tests to identify the most impactful barriers and facilitators among all respondents. We used logistic regression models to explore the influence of hospitalists' attitudes toward providing SUD care on perceived barriers and facilitators.

RESULTS

The survey was distributed to 429 individuals across 15 hospitals. Eighty-two hospitalists responded to the survey (response rate, 21.4%). Most respondents frequently cared for hospitalized patients with SUDs (n = 63, 77%) and prescribed medications for SUDs (n = 44, 56%). Four respondents (5%) felt that patients received adequate support during care transitions. Lack of social support ( P < 0.001) and social factors such as lack of transportation ( P < 0.001) were perceived as the largest barriers to successful care transitions. Conversely, a partnering outpatient clinic/clinician ( P < 0.001) and outpatient-based care coordination ( P < 0.001) were perceived as the strongest facilitators. Respondents' attitudes toward people with SUDs had a modest effect on perceived barriers and facilitators.

CONCLUSIONS

Hospitalists perceived increased outpatient SUD treatment infrastructure and transitional care supports as most important in facilitating posthospitalization care transitions for patients with SUDs.

Medication for Opioid Use Disorder After Serious Injection-Related Infections in Massachusetts

Importance

Serious injection-related infections (SIRIs) cause significant morbidity and mortality. Medication for opioid use disorder (MOUD) improves outcomes but is underused. Understanding MOUD treatment after SIRIs could inform interventions to close this gap.

Objectives

To examine rehospitalization, death rates, and MOUD receipt for individuals with SIRIs and to assess characteristics associated with MOUD receipt.

Design, Setting, and Participants

This retrospective cohort study used the Massachusetts Public Health Data Warehouse, which included all individuals with a claim in the All-Payer Claims Database and is linked to individual-level data from multiple government agencies, to assess individuals aged 18 to 64 years with opioid use disorder and hospitalization for endocarditis, osteomyelitis, epidural abscess, septic arthritis, or bloodstream infection (ie, SIRI) between July 1, 2014, and December 31, 2019. Data analysis was performed from November 2021 to May 2023.

Exposure

Demographic and clinical factors potentially associated with posthospitalization MOUD receipt.

Main Outcomes and Measures

The main outcome was MOUD receipt measured weekly in the 12 months after hospitalization. We used zero-inflated negative binomial regression to examine characteristics associated with any MOUD receipt and rates of treatment in the 12 months after hospitalization. Secondary outcomes were receipt of any buprenorphine formulation, methadone, and extended-release naltrexone examined individually.

Results

Among 8769 individuals (mean [SD] age, 43.2 [12.0] years; 5066 [57.8%] male) who survived a SIRI hospitalization, 4305 (49.1%) received MOUD, 5919 (67.5%) were rehospitalized, and 973 (11.1%) died within 12 months. Of those treated with MOUD in the 12 months after hospitalization, the mean (SD) number of MOUD initiations during follow-up was 3.0 (1.7), with 956 of 4305 individuals (22.2%) receiving treatment at least 80% of the time. MOUD treatment after SIRI hospitalization was significantly associated with MOUD in the prior 6 months (buprenorphine: adjusted odds ratio [AOR], 16.51; 95% CI, 13.81-19.74; methadone: AOR, 28.46; 95% CI, 22.41-36.14; or naltrexone: AOR, 2.05; 95% CI, 1.56-2.69). Prior buprenorphine (incident rate ratio [IRR], 1.17; 95% CI, 1.11-1.24) or methadone (IRR, 1.89; 95% CI, 1.79-2.01) use was associated with higher treatment rates after hospitalization, and prior naltrexone use (IRR, 0.86; 95% CI, 0.77-0.95) was associated with lower rates.

Conclusions and Relevance

This study found that in the year after a SIRI hospitalization in Massachusetts, mortality and rehospitalization were common, and only half of patients received MOUD. Treatment with MOUD before a SIRI was associated with posthospitalization MOUD initiation and time receiving MOUD. Efforts are needed to initiate MOUD treatment during SIRI hospitalizations and subsequently retain patients in treatment.

Piloting a Hospital-Based Rapid Methadone Initiation Protocol for Fentanyl

OBJECTIVES

Treating acute opioid withdrawal and offering medications for opioid use disorder (OUD) is critical. Hospitalization offers a unique opportunity to rapidly initiate methadone for OUD; however, little clinical guidance exists. This report describes our experience during the first 9 months following introduction of a hospital-based rapid methadone initiation protocol.

METHODS

We conducted a retrospective chart review of hospitalized patients with OUD seen by our interprofessional addiction medicine consult service at an urban academic center between December 2022 and August 2023. We identified patients who initiated methadone using the rapid methadone initiation protocol, which includes dose recommendations (maximum 60 mg day 1, 70 mg day 2, 80 mg day 3, 100 mg days 4-7) and strict inclusion and exclusion criteria (end organ failure, arrhythmia, concurrent benzodiazepine or alcohol use, age >65).

RESULTS

There were 171 patients that received methadone for OUD during the study period. Of those, 25 patients (15%) received rapid methadone initiation. The average total daily dose of methadone on days 1-7 was 53.0 mg, 69.2 mg, 75.4 mg, 79.5 mg, 87.1 mg, 92.2 mg, and 96.6 mg, respectively. There were no adverse events requiring holding a dose of scheduled methadone, naloxone administration, or transfer to higher level of care.

CONCLUSIONS

A rapid methadone initiation protocol for OUD can be implemented in the inpatient setting. Patients up-titrated their methadone doses quicker than with traditional induction methods, and there were no serious adverse events. Appropriate patient selection may be important to avoid harms.

Barriers and Facilitators to Establishing Partnerships for Substance Use Disorder Care Transitions Between Safety-Net Hospitals and Community-Based Organizations

BACKGROUND

The effectiveness of hospital-based transitional opioid programs (TOPs), which aim to connect patients with substance use disorders (SUD) to ongoing treatment in the community following initiation of medication for opioid use disorder (MOUD) treatment in the hospital, hinges on successful patient transitions. These transitions are enabled by strong partnerships between hospitals and community-based organizations (CBOs). However, no prior study has specifically examined barriers and facilitators to establishing SUD care transition partnerships between hospitals and CBOs.

OBJECTIVE

To identify barriers and facilitators to developing partnerships between hospitals and CBOs to facilitate care transitions for patients with SUDs.

DESIGN

Qualitative study using semi structured interviews conducted between November 2022-August 2023.

PARTICIPANTS

Staff and providers from hospitals affiliated with four safety-net health systems (n=21), and leaders and staff from the CBOs with which they had established partnerships (n=5).

APPROACH

Interview questions focused on barriers and facilitators to implementing TOPs, developing partnerships with CBOs, and successfully transitioning SUD patients from hospital settings to CBOs.

KEY RESULTS

We identified four key barriers to establishing transition partnerships: policy and philosophical differences between organizations, ineffective communication, limited trust, and a lack of connectivity between data systems. We also identified three facilitators to partnership development: strategies focused on building partnership quality, strategic staffing, and organizing partnership processes.

CONCLUSIONS

Our findings demonstrate that while multiple barriers to developing hospital-CBO partnerships exist, stakeholders can adopt implementation strategies that mitigate these challenges such as using mediators, cross-hiring, and focusing on mutually beneficial services, even within resource-limited safety-net settings. Policymakers and health system leaders who wish to optimize TOPs in their facilities should focus on adopting implementation strategies to support transition partnerships such as inadequate data collection and sharing systems.

Involuntary discharge from drug or alcohol treatment programs in Vancouver, Canada

BACKGROUND

Retention in substance use treatment is essential to treatment success. While programmatic factors are known to influence retention, less is known about the role of involuntary discharges from drug or alcohol treatment programs. Therefore, we sought to identify the prevalence of and factors associated with involuntary discharge due to ongoing substance use.

METHODS

Data were derived from two community-recruited prospective cohort studies of people who use drugs in Vancouver, Canada. Generalized estimating equation (GEE) analyses were used to identify variables associated with involuntary discharge from treatment programs due to ongoing substance use.

RESULTS

Between June 2017 and March 2020, 1487 participants who accessed substance use treatment and completed at least one study interview were included in this study. Involuntary discharge from a treatment program due to ongoing substance use was reported by 41 (2.8%) participants throughout the study, with 23 instances reported at baseline and another 18 reported during study follow-up. In a multivariable GEE analysis, involuntary discharge was positively associated with homelessness (Adjusted Odds Ratio [AOR] = 3.22, 95% Confidence Interval [95% CI]: 1.59-6.52), daily injection drug use (AOR = 1.87, 95% CI 1.06-3.32) and recent overdose (AOR = 2.50, 95% CI 1.38-4.53), and negatively associated with age (AOR = 0.93, 95% CI 0.90-0.96). In sub-analyses, participants have most commonly been discharged from in-patient treatment centres (52.2%), recovery houses (28.3%) and detox programs (10.9%), and for using heroin (45.5%) and/or crystal methamphetamine (36.4%).

CONCLUSIONS

While involuntary discharge was a relatively rare occurrence, those who were discharged due to active substance use possessed several markers of risk, including high-intensity injection drug use, homelessness, and recent non-fatal overdose. Our findings highlight the need for increased flexibility within treatment programs to account for those who re-initiate or continue to use substances during treatment.

Developing a remotely delivered intensive outpatient program adapted for hospitalized patients with opioid use disorder: A qualitative study

Introduction

Individuals with opioid use disorder (OUD) who inject drugs have an elevated risk of experiencing serious injection-related infections. While such infections can be treated, treatment for the underlying OUD is often limited. One potential strategy for more intensive addiction treatment is to offer a remotely delivered intensive outpatient program (IOP), adapted from an existing remote IOP ("Smart IOP"). We aimed to conduct a qualitative study to gather feedback on Smart IOP and identify adaptations needed for hospitalized patients.

Methods

Individuals with OUD and a history of serious injection-related infections completed a semi-structured interview and were shown samples of the videos and program content. The interviews were transcribed verbatim and coded to conduct a thematic analysis.

Results

Seventeen individuals participated. The mean age was 40.8 years and 70.6 % were men. Participants reported that IOP during the hospitalization would have been helpful to their recovery. The themes that emerged were the importance of medications for OUD, having a relapse prevention plan, engaging with a recovery coach, and ensuring treatment linkage post-discharge. Other themes included the recognition of the severity of one's illness and the emotional experiences related to the hospitalization.

Conclusions

Participants expressed the value of an IOP during hospitalization and provided insights into the support needed while hospitalized. The tailored IOP is now being developed and will undergo a pilot feasibility trial.

Slicing through silos: Development and evaluation of a hospital-based telehealth hepatitis C virus treatment program

BACKGROUND

There exist many barriers to hepatitis C virus (HCV) treatment for those with substance use disorder (SUD) or who lack access to routine medical care. A hospital-based telehealth program was developed to provide treatment opportunities for hospitalized patients living with HCV.

METHODS

This single site prospective cohort study conducted from July 2022 to March 2023 aimed to measure linkage to care with an HCV clinician and initiation of HCV treatment in hospitalized patients. Patients were assessed in-person by a social worker then seen via telehealth by a clinician who prescribed either glecaprevir/pibrentasvir or sofosbuvir/velpatasvir. Treatment was initiated with pharmacist assistance. The team conducted in-person and/or telephonic outreach during and after hospitalization. Cure was confirmed by sustained virologic response at 12 weeks (SVR12) post-treatment.

RESULTS

A total of 25 patients were enrolled and completed telehealth visits. All patients had a history of SUD and 18 (72 %) were unstably housed. Nineteen patients (76 %) initiated treatment, and 14 (56 %) successfully completed treatment. Twelve patients (48 %) completed post-treatment labs, including two who prematurely discontinued treatment. Eleven patients (44 %) achieved confirmed cure with SVR12.

CONCLUSION

A hospital-based, multidisciplinary telehealth program can be an innovative care model to successfully treat HCV in a difficult-to-treat patient populations.

Medical-surgical patients with untreated hazardous drinking: Randomized controlled trial of the DO-MoST intervention to improve health outcomes over 12-month follow-up

INTRODUCTION

High prevalence and harmful consequences of hazardous drinking among medical-surgical patients underscore the importance of intervening with drinking to improve patients' health. This study evaluated a novel intervention, "Drinking Options - Motivate, Shared Decisions, Telemonitor" (DO-MoST).

METHODS

In a randomized design, 155 medical-surgical patients with untreated hazardous drinking were assigned to enhanced usual care or DO-MoST, and followed 3, 6, and 12 months later. We conducted intent-to-treat and per-protocol analyses.

RESULTS

For the primary outcome, percent days of alcohol abstinence in the past 30 days, intent-to-treat analyses did not find superior effectiveness of DO-MoST. However, per-protocol analyses found abstinence increased between 3 and 12 months among participants assigned to DO-MoST who engaged with the intervention (n=46). Among DO-MoST-assigned participants who did not engage (n=27), abstinence stayed stable during follow-up. Group comparisons showed an advantage on abstinence for Engaged compared to Non-Engaged participants on change over time. Intent-to-treat analyses found that DO-MoST was superior to usual care on the secondary outcome of physical health at 12 months; per-protocol analyses found that Engaged DO-MoST-assignees had better physical health at 12 months than Non-Engaged DO-MoST-assignees. DO-MoST-assignees had lower odds of receiving substance use care during follow-up than usual care-assignees.

DISCUSSION

Patients engaged in DO-MoST showed a greater degree of abstinence and better physical health relative to the non-engaged or usual care group. DO-MoST may be a source of alcohol help in itself rather than only a linkage intervention. Work is needed to increase DO-MoST engagement among medical-surgical patients with untreated hazardous drinking.

Strategies to Improve Patient-Centered Care for Drug Use-Associated Infective Endocarditis: JACC Focus Seminar 2/4

Drug use-associated infective endocarditis (DUA-IE) is a major cause of illness and death for people with substance use disorder (SUD). Investigations to date have largely focused on advancing the care of patients with DUA-IE and included drug use disorder treatment, decisions about surgery, and choice of antibiotics during the period of hospitalization. Transitions from hospital to outpatient care are relatively unstudied and frequently a key factor of uncontrolled infection, continued substance use, and death. In this paper, we review the evidence supporting cross-disciplinary care for people with DUA-IE and highlight domains that need further clinician, institutional, and research investment in clinicians and institutions. We highlight best practices for treating people with DUA-IE, with a focus on addressing health disparities, meeting health-related social needs, and policy changes that can support care for people with DUA-IE in the hospital and when transitioning to the community.

Post-hospitalization Care Transition Strategies for Patients with Substance Use Disorders: A Narrative Review and Taxonomy

Hospitalizations represent important opportunities to engage individuals with substance use disorders (SUD) in treatment. For those who engage with SUD treatment in the hospital setting, tailored supports during post-discharge transitions to longitudinal care settings may improve care linkages, retention, and treatment outcomes. We updated a recent systematic review search on post-hospitalization SUD care transitions through a structured review of published literature from January 2020 through June 2023. We then added novel sources including a gray literature search and key informant interviews to develop a taxonomy of post-hospitalization care transition models for patients with SUD. Our updated literature search generated 956 abstracts not included in the original systematic review. We selected and reviewed 89 full-text articles, which yielded six new references added to 26 relevant articles from the original review. Our search of five gray literature sources yielded four additional references. Using a thematic analysis approach, we extracted themes from semi-structured interviews with 10 key informants. From these results, we constructed a taxonomy consisting of 10 unique SUD care transition models in three overarching domains (inpatient-focused, transitional, outpatient-focused). These models include (1) training and protocol implementation; (2) screening, brief intervention, and referral to treatment; (3) hospital-based interdisciplinary consult team; (4) continuity-enhanced interdisciplinary consult team; (5) peer navigation; (6) transitional care management; (7) outpatient in-reach; (8) post-discharge outreach; (9) incentivizing follow-up; and (10) bridge clinic. For each model, we describe design, scope, approach, and implementation strategies. Our taxonomy highlights emerging models of post-hospitalization care transitions for patients with SUD. An established taxonomy provides a framework for future research, implementation efforts, and policy in this understudied, but critically important, aspect of SUD care.

Association of hospital-based substance use supports on emergency department revisits: a retrospective cohort study in Sudbury, Canada from 2018 to 2022

BACKGROUND

This study compares emergency department (ED) revisits for patients receiving hospital-based substance-use support compared to those who did not receive specialized addiction services at Health Sciences North in Sudbury, Ontario, Canada.

METHODS

The study is a retrospective observational study using administrative data from all patients presenting with substance use disorder (SUD) at Health Sciences North from January 1, 2018, and August 31, 2022 with ICD-10 codes from the Discharge Abstract Database (DAD) and the National Ambulatory Care Database (NACRS). There were two interventions under study: addiction medicine consult services (AMCS group), and specialized addiction medicine unit (AMU group). The AMCS is a consult service offered for patients in the ED and those who are admitted to the hospital. The AMU is a specialized inpatient medical unit designed to offer addiction support to stabilize patients that operates under a harm-reduction philosophy. The primary outcome was all cause ED revisit within 30 days of the index ED or hospital visit. The secondary outcome was all observed ED revisits in the study period. Kaplan-Meier curves were used to measure the proportion of 30-day revisits by exposure group. Odds ratios and Hazard Ratios were calculated using logistic regression models with random effects and Cox-proportional hazard model respectively.

RESULTS

A total of 5,367 patients with 10,871 ED index visits, and 2,127 revisits between 2018 and 2022 are included in the study. 45% (2,340/5,367) of patient were not admitted to hospital. 30-day revisits were less likely among the intervention group: Addiction Medicine Consult Services (AMCS) in the ED significantly reduced the odds of revisits (OR 0.53, 95% CI 0.39-0.71, p < 0.01) and first revisits (OR 0.42, 95% CI 0.33-0.53, p < 0.01). The AMU group was associated with lower revisits odds (OR 0.80, 95% CI 0.66-0.98, p = 0.03). For every additional year of age, the odds of revisits slightly decreased (OR 0.99, 95% CI 0.98-1.00, p = 0.01) and males were found to have an increased risk compared to females (OR 1.50, 95% CI 1.35-1.67, p < 0.01).

INTERPRETATION

We observe statistically significant differences in ED revisits for patients receiving hospital-based substance-use support at Health Sciences North. Hospital-based substance-use supports could be applied to other hospitals to reduce 30-day revisits.

Impact of inpatient addiction psychiatry consultation on opioid use disorder outcomes

BACKGROUND AND OBJECTIVES

Addiction consultation services provide access to specialty addiction care during general hospital admission. This study assessed opioid use disorder (OUD) outcomes associated with addiction consultation.

METHODS

Retrospective cohort study of individuals with OUD admitted to an academic medical center between 2018 and 2023. The exposure was addiction consultation. Outcomes included initiating medication for OUD (MOUD), hospital length of stay, before-medically-advised (BMA) discharge, and 30- and 90-day postdischarge acute care utilization.

RESULTS

Of 26,766 admissions (10,501 patients) with OUD, 2826 addiction consultations were completed. Consultation cohort was more likely to be young, male, and White than controls. Consultation was associated with greater MOUD initiation (adjusted odds ratio [aOR], 5.07; 95% confidence interval [CI], 4.41-5.82), fewer emergency department visits at 30 (aOR, 0.78; 95% CI, 0.67-0.92) and 90 (aOR, 0.79; 95% CI, 0.69-0.89) days, and fewer hospitalizations at 30 (aOR, 0.65; 95% CI, 0.56 to 0.76) and 90 (aOR, 0.67; 95% CI, 0.59-0.76) days. Additionally, consultation patients were more likely to have a longer hospital stay and leave BMA.

CONCLUSIONS AND SCIENTIFIC SIGNIFICANCE

Addiction consultation was associated with increased MOUD initiation and reduced postdischarge acute care utilization. This is the largest study to date showing a significant association between addiction psychiatry consultation and improved OUD outcomes when compared to controls. The observed reduction in postdischarge acute care utilization remains even after adjusting for MOUD initiation. Disparities in access to addiction consultation warrant further study.

The IMPACT (Infection Management Plus Addiction Care Together) Pilot: A Case Series of Combined Contingency Management for Substance Use Disorders and Antibiotic Adherence in the Hospital Setting

OBJECTIVES

Psychostimulant-related mortality is rising alongside increasing substance use-related hospitalizations, which are commonly complicated by patient-directed (or "against medical advice") discharges. Contingency management (CM) is an underused evidence-based treatment for substance use disorders with proven efficacy to support medication adherence. Our objective was to describe feasibility and preliminary effectiveness of a novel CM intervention incentivizing both drug use reduction and antibiotic adherence in the hospital setting.

METHODS

We conducted a pilot intervention of twice weekly CM for stimulant and/or opioid use disorder and antibiotic adherence conducted on inpatient wards and/or an embedded skilled nursing facility in an urban public hospital. Based on point-of-care urine drug test results and objective antibiotic adherence review, participants earned increasing opportunities to receive incentives. We measured feasibility via number of visits attempted and cost of gift cards dispensed. We evaluated effectiveness via antibiotic completion, discharge type, and participant perception of intervention effectiveness collected via structured survey.

RESULTS

Of 13 participants enrolled, most had opioid use disorder (fentanyl in 10/13) and stimulant use disorder (methamphetamine in 7/13). Almost all were receiving treatment for osteomyelitis and/or endocarditis (12/13). Feasibility challenges included competing demands of acute care with variable range of completed visits per participant (1-12 visits). Despite this, antibiotic completion was high (92%, 12/13 participants) with only two patient-directed discharges. Participants described CM as very effective in aiding infection treatment but had greater variability in beliefs regarding CM facilitation of reduced drug use.

CONCLUSIONS

Providing CM in the hospital setting may represent an effective approach to improving health outcomes by increasing antibiotic adherence and addressing substance use.

Hazardous Drinking Interventions Delivered During Medical-Surgical Care: Patient and Provider Views

Addressing hazardous drinking during medical-surgical care improves patients' health. This formative evaluation examined patients' consideration of options to change drinking and engage in treatment. It explored whether interventions such as "DO-MoST" overcome treatment barriers. We interviewed 20 medical-surgical patients with hazardous drinking in a trial of DO-MoST, and 16 providers. Analyses used a directed content approach. Patients were receptive to and comfortable discussing drinking during medical-surgical care. Interventions like DO-MoST (patient-centered, motivational approach to shared decision making) addressed some treatment barriers. Patients and providers viewed such interventions as helpful by building a relationship with a psychologist who facilitated self-awareness of drinking behaviors, and discussing connections between alcohol- and physical health-related problems and potential strategies to address drinking. However, both groups expressed concerns about individual and system-level barriers to long-term change. Interventions like DO-MoST bridge the gap between the patient's medical treatment episode and transition to other health care settings. TRIAL REGISTRATION: The study is registered on ClinicalTrials.gov (ID: NCT03258632).

Low-dose buprenorphine initiation and treatment continuation among hospitalized patients with opioid dependence: A retrospective cohort study

BACKGROUND

Buprenorphine is an effective treatment for both opioid use disorder (OUD) and chronic pain, but buprenorphine's pharmacology complicates treatment initiation for some patients. Low-dose buprenorphine initiation is a novel strategy that may reduce precipitated withdrawal. Few studies describe what patient populations benefit most from low-dose initiations and the clinical parameters that impact treatment continuation. This study aimed to 1) describe experiences with low-dose buprenorphine initiation, including both successes and failures among hospitalized patients in an urban underserved community; 2) identify patient- and treatment-related characteristics associated with unsuccessful initiation and treatment discontinuation; and 3) assess buprenorphine treatment continuation after discharge.

METHODS

This is a retrospective cohort study with opioid-dependent (meaning OUD or receiving long-term opioid therapy for chronic pain) patients who underwent low-dose buprenorphine initiation during hospital admission from October 2021 through April 2022. The primary outcome was successful completion of low-dose initiation. Bivariate analysis identified patient- and treatment-related factors associated with unsuccessful initiation. Secondary outcomes were buprenorphine treatment discontinuation at post-discharge follow-up, 30- and 90-days.

RESULTS

Of 28 patients who underwent low-dose buprenorphine initiation, 68 % successfully completed initiation. Unsuccessful initiation was associated with receipt of methadone during admission and higher morphine milligram equivalents (MME) of supplemental opioids. Of 22 patients with OUD, the percent receiving a buprenorphine prescription at a follow-up visit, 30 days, and 90 days, respectively, was 46 %, 36 %, and 36 %. Of 6 patients with chronic pain, the percent receiving a buprenorphine prescription at a follow-up visit, 30 days, and 90 days, respectively, was 100 %, 100 %, and 83 %.

CONCLUSION

Low-dose buprenorphine initiation can be successful in opioid-dependent hospitalized patients. Patients taking methadone or requiring higher MME of supplemental opioids may have more difficulty with the low-dose buprenorphine initiation approach, but these findings should be replicated in larger studies. This study suggests patient- and treatment-related factors that clinicians could consider when determining the optimal treatment strategy for patients wishing to transition to buprenorphine.

Integrating substance use peer support and screening brief intervention and referral to treatment services in the emergency department: a descriptive study of the ED leads program

BACKGROUND

The ED Leads program was introduced to 11 emergency departments (EDs) within New York City public hospitals from 2018 to 2019 to address a need for addiction support services in the ED. The purpose of this study is to (i) describe the ED Leads blended licensed-clinician and peer counselor team model in the ED at three hospitals, (ii) provide a descriptive analysis of patient engagement and referrals to substance use disorder (SUD) care post-intervention, and (iii) highlight potential barriers and facilitators to implementing the model.

METHODS

The program intended to combine Screening Brief Intervention and Referral to Treatment and peer support services. The authors analyzed electronic medical records data for patients encountered by ED Leads in the first 120 days of program launch. Data included the outcome of an encounter when a patient was engaged with one or both staff types, and 7-day attendance at an SUD treatment appointment when a patient accepted a referral within the 11-hospital system.

RESULTS

There were 1785 patients approached by ED Leads staff during the study period. Engagement differed by staff type and patient demographics, and encounter outcomes varied significantly by hospital. Eighty-four percent (N = 1503) of patients who were approached engaged with at least one staff type, and 6% (N = 86) engaged with both. Patients were predominantly male (N = 1438, 81%) with an average age of 45 (SD = 13), and enrolled in Medicaid (N = 1062, 59%). A majority (N = 801, 45%) had alcohol use disorder. Of the patients who accepted a referral within the system (N = 433), 63% received treatment services within 7 days of the ED Leads encounter, a majority at detoxification treatment (N = 252, 58%).

CONCLUSIONS

This study describes the potential value and challenges of implementing a blended peer counselor and licensed clinician model in the ED to provide SUD services. While teams provided a high volume of referrals and the analysis of post-intervention treatment follow up is promising, the blended team model was not fully realized, making it difficult to assess the benefits of this combined service. Further research might examine patient outcomes among ED patients who are offered services by both a peer counselor and licensed clinician.

Effect of a Co-Located Bridging Recovery Initiative on Hospital Length of Stay Among Patients With Opioid Use Disorder: The BRIDGE Randomized Clinical Trial

Importance

Co-located bridge clinics aim to facilitate a timely transition to outpatient care for inpatients with opioid use disorder (OUD); however, their effect on hospital length of stay (LOS) and postdischarge outcomes remains unclear.

Objective

To evaluate the effect of a co-located bridge clinic on hospital LOS among inpatients with OUD.

Design, Setting, and Participants

This parallel-group randomized clinical trial recruited 335 adult inpatients with OUD seen by an addiction consultation service and without an existing outpatient clinician to provide medication for OUD (MOUD) between November 25, 2019, and September 28, 2021, at a tertiary care hospital affiliated with a large academic medical center and its bridge clinic.

Intervention

The bridge clinic included enhanced case management before and after hospital discharge, MOUD prescription, and referral to a co-located bridge clinic. Usual care included MOUD prescription and referrals to community health care professionals who provided MOUD.

Main Outcomes and Measures

The primary outcome was the index admission LOS. Secondary outcomes, assessed at 16 weeks, were linkage to health care professionals who provided MOUD, MOUD refills, same-center emergency department (ED) and hospital use, recurrent opioid use, quality of life (measured by the Schwartz Outcome Scale-10), overdose, mortality, and cost. Analysis was performed on an intent-to-treat basis.

Results

Of 335 participants recruited (167 randomized to the bridge clinic and 168 to usual care), the median age was 38.0 years (IQR, 31.9-45.7 years), and 194 (57.9%) were male. The median LOS did not differ between arms (adjusted odds ratio [AOR], 0.94 [95% CI, 0.65-1.37]; P = .74). At the 16-week follow-up, participants referred to the bridge clinic had fewer hospital-free days (AOR, 0.54 [95% CI, 0.32-0.92]), more readmissions (AOR, 2.17 [95% CI, 1.25-3.76]), and higher care costs (AOR, 2.25 [95% CI, 1.51-3.35]), with no differences in ED visits (AOR, 1.15 [95% CI, 0.68-1.94]) or deaths (AOR, 0.48 [95% CI, 0.08-2.72]) compared with those receiving usual care. Follow-up calls were completed for 88 participants (26.3%). Participants referred to the bridge clinic were more likely to receive linkage to health care professionals who provided MOUD (AOR, 2.37 [95% CI, 1.32-4.26]) and have more MOUD refills (AOR, 6.17 [95% CI, 3.69-10.30]) and less likely to experience an overdose (AOR, 0.11 [95% CI, 0.03-0.41]).

Conclusions and Relevance

This randomized clinical trial found that among inpatients with OUD, bridge clinic referrals did not improve hospital LOS. Referrals may improve outpatient metrics but with higher resource use and expenditure. Bending the cost curve may require broader community and regional partnerships.

Trial Registration

ClinicalTrials.gov Identifier: NCT04084392.

Hospital Addiction Medicine Consultation Service Orders and Outcomes by Patient Race and Ethnicity in an Urban, Safety-Net Hospital

BACKGROUND

Hospital admissions involving substance use disorders are increasing and represent an opportunity to engage patients in substance use treatment. Addiction medicine consultation services improve access to medications for opioid use disorder (MOUD) and patient outcomes. However, as hospitals continue to adopt addiction medicine consultation services it is important to identify where disparities may emerge in the process of care.

OBJECTIVE

To describe addiction medicine consultation service use by race and ethnicity as well as substance to identify opportunities to reduce substance use treatment disparities.

DESIGN

Retrospective cohort study using 2016-2021 Electronic Health Record data from a large Midwest safety-net hospital.

PARTICIPANTS

Hospitalized adults aged 18 or older, with one or more substance use disorders.

MAIN MEASURES

Consultation orders placed, patient seen by consult provider, and receipt of MOUD by self-reported race.

KEY RESULTS

Between 2016 and 2021, we identified 16,895 hospitalized patients with a substance use disorder. Consultation orders were placed for 6344 patients and 2789 were seen by the consult provider. Black patients were less likely (aOR = 0.58; 95% CI: 0.53-0.63) to have an addiction medicine consultation order placed and, among patients with a consultation order, were less likely (aOR = 0.74; 95% CI: 0.65-0.85) to be seen by the consult provider than White patients. Overall, Black patients with OUD were also less likely to receive MOUD in the hospital (aOR = 0.63; 95% CI: 0.50-0.79) compared to White patients. However, there were no differences in MOUD receipt among Black and White patients seen by the consult provider.

CONCLUSIONS

Using Electronic Health Record data, we identified racial and ethnic disparities at multiple points in the inpatient addiction medicine consultation process. Addressing these disparities may support more equitable access to MOUD and other substance use treatment in the hospital setting.

In-Hospital Methadone Enrollment: a Novel Program to Facilitate Linkage from the Hospital to the Opioid Treatment Program for Vulnerable Patients with Opioid Use Disorder

INTRODUCTION

Methadone ameliorates opioid withdrawal among hospitalized patients with opioid use disorder (OUD). To continue methadone after hospital discharge, patients must enroll in an opioid treatment program (OTP) per federal regulations. Uncontrolled opioid withdrawal is a barrier to linkage from hospital to OTP.

AIM

Describe a federally compliant In-Hospital Methadone Enrollment Team (IN-MEET) that enrolls hospitalized patients with OUD into an OTP with facilitated hospital to OTP linkage.

SETTING

Seven hundred-bed university hospital in Aurora, CO.

PROGRAM DESCRIPTION

A physician dually affiliated with a hospital's addiction consultation service and a community OTP completes an in-hospital, face-to-face medical assessment required by federal law and titrates methadone to comfort. An OTP-affiliated nurse with hospital privileges completes a psychosocial evaluation and provides case management by arranging transportation and providing weekly telephone check-ins.

PROGRAM EVALUATION METRICS

IN-MEET enrollments completed, hospital to OTP linkage, and descriptive characteristics of patients who completed IN-MEET enrollments compared to patients who completed community OTP enrollments.

RESULTS

Between April 2019 and April 2023, our team completed 165 IN-MEET enrollments. Among a subset of 73 IN-MEET patients, 56 (76.7%) presented to the OTP following hospital discharge. Compared to community OTP enrolled patients (n = 1687), a higher percentage of IN-MEET patients were older (39.7 years, standard deviation [SD] 11.2 years vs. 36.1 years, SD 10.6 years) and were unhoused (n = 43, 58.9% vs. n = 199, 11.8%). Compared to community OTP enrolled patients, a higher percentage of IN-MEET patients reported heroin or fentanyl as their primary substance (n = 53, 72.6% vs. n = 677, 40.1%), reported methamphetamine as their secondary substance (n = 27, 37.0% vs. n = 380, 22.5%), and reported they injected their primary substance (n = 46, 63.0% vs. n = 478, 28.3%).

CONCLUSION

IN-MEET facilitates hospital to OTP linkage among a vulnerable population. This model has the potential to improve methadone access for hospitalized patients who may not otherwise seek out treatment.

Recovery Barrier Characterizations by Hospitalized Patients with Substance Use Disorders: Results from a Randomized Clinical Study on Inpatient Peer Recovery Coaching

Patients hospitalized with medical complications from substance use disorder (SUD) encounter unique health problems that may complicate their recovery. Recovery barriers are not well understood in this population. The study objective is to characterize recovery barriers in this patient population. Participants (n = 96) in this six-month longitudinal study were randomized to a peer recovery coaching intervention or standard of care. The primary outcome measures were qualitative, open-ended questions addressing factors interfering with participants' recovery. Data were analyzed using content analysis. Themes were identified a priori using past research on recovery capital domains; these seven barriers were (1) psychological health difficulties, (2) physical health challenges, (3) lack of social support, (4) insufficient treatment or recovery support to maintain sobriety, (5) environmental and housing concerns, (6) deficits in coping skills, and (7) lack of meaningful activities. At baseline, the most common recovery barriers were in the environment and housing (28.1%), psychological health (27.1%), and social support (22.9%) domains. At six-month follow-up, participants were asked to describe barriers they felt they had made improvement in over the last six months. The primary themes that participants reported improvements in were treatment and recovery support to maintain sobriety (52.1%), coping skills (35.4%), and social support (27.1%). Hospitalization and participation in a randomized controlled trial may be a turning point in which to address recovery barriers for patients hospitalized with complications from SUD.

The multiple makings of a supervised consumption service in a hospital setting

BACKGROUND

Whereas supervised consumption services (SCSs) are common in many community settings, they are seldomly found in acute care hospitals. As hospitals present unique circumstances that can shape the impacts of an SCS, careful consideration of local implementation contexts and practices is required. We explored the pre-implementation stage of an SCS, to examine how an SCS is made and made differently in relation to the material-discursive context of the hospital.

METHODS

We conducted 11 focus groups with 83 staff and clinicians at an inner-city hospital in Toronto, Canada. Data analysis followed principles of grounded theory and was informed by an 'evidence making interventions' framework.

RESULTS

While most participants indicated they would support the establishment of an SCS at the hospital, multiple enactments of an SCS emerged. An SCS was enacted: as a means to reduce drug-related risks for all people who use drugs, as an opportunity to intervene on patients' drug use, as a means to centralize drug use, and as a transformative intervention for the hospital. In our findings, harm reduction, abstinence, security, and risk mitigation goals existed closely together, yielding overlaying realities.

CONCLUSION

Our findings revealed various enactments of an SCS, some of which are likely to negatively affect people who use drugs and service access. As more hospitals consider the implementation of an SCS, understanding how an SCS is made in practice will be key to building a service that focuses on the needs of people who use drugs.

Telehealth Initiation of Buprenorphine for Opioid Use Disorder: Patient Characteristics and Outcomes

BACKGROUND

The COVID-19 pandemic exacerbated access barriers for patients with opioid use disorder. Telehealth presents an opportunity to improve access, treatment quality, and patient outcomes.

OBJECTIVE

To determine patient characteristics associated with initiating buprenorphine treatment via telehealth and to examine how telehealth initiation is associated with access, treatment quality, and health outcomes.

DESIGN AND PARTICIPANTS

This cross-sectional study used deidentified insurance claims to identify opioid use disorder adult patients initiating buprenorphine treatment between March 1, 2020, and November 30, 2021. Multivariable logistic regression assessed determinants of telehealth initiation. Propensity score matching addressed observed differences between in-person and telehealth initiators.

MAIN MEASURES

Treatment quality outcomes included initiation within 14 days of diagnosis, engagement (at least 2 opioid use disorder-related visits), and any buprenorphine refill during the study period. Health outcomes included opioid overdose and opioid use disorder-related emergency department and inpatient visits.

KEY RESULTS

We identified 23,565 adult buprenorphine initiators, including 3314 (14.1%) patients using telehealth. Younger patients (OR 0.91 to 0.77), females (OR 1.18), South (OR 1.63) and Midwest (OR 1.27) regions, rural area (OR 1.12), and higher-income (OR 1.16) neighborhood residents were more likely to use telehealth. Telehealth patients were more likely than in-person patients (54.5% vs. 48.4%; adjusted odds ratio (AOR), 1.29; 95% CI, 1.19-1.40) to stay engaged with opioid use disorder treatment, and more likely to refill buprenorphine during the study period (83.6% vs. 79.0%, AOR 1.37; 95% CI, 1.23-1.52). Telehealth initiation of buprenorphine was associated with 36% lower overdose rate than in-person initiation (adjusted incidence rate ratio 0.64; 95% CI, 0.45-0.94). The two groups evidenced no significant differences in opioid use disorder-related ED visit and hospitalization.

CONCLUSIONS

Our findings suggest that telehealth-initiated buprenorphine treatment is associated with reduced opioid overdose rate and improved patient engagement. Our findings strengthen the case for extending telehealth exemptions and prescribing flexibilities for treatment.

Opioid Use Disorder Treatment Linkage at Strategic Touchpoints Using Buprenorphine (OUTLAST-B): Rationale, Design, and Evolution of a Randomized Controlled Trial

Background

Despite the effectiveness and growing availability of treatment for opioid use disorder (OUD) with buprenorphine, many people with OUD do not access treatment services. This article describes the rationale, methodological design, evolution, and progress of an ongoing clinical trial of treatment linkage strategies for people with untreated OUD.

Methods

The study, titled Opioid Use Disorder Treatment Linkage at Strategic Touchpoints using Buprenorphine (OUTLAST-B), uses "strategic touchpoints", initially sexual health clinics and subsequently broadened to other service venues and participant social networks, for recruitment and screening. Adults with untreated OUD (target N = 360) are randomized to one of the three arms: Usual Care (UC, enhanced with overdose education and naloxone distribution), Patient Navigation (PN), or Patient Navigation with an immediate short-term bridge prescription for buprenorphine (PN + BUP). In the PN and PN + BUP arms, the Patient Navigator works with participants for 2 months to facilitate treatment entry and early retention, resolve barriers (e.g., ID cards, transportation), and provide motivational support.

Results

The primary outcome is OUD treatment entry within 30 days of enrollment. Participants are assessed at baseline and followed at 3- and 6-months post-enrollment on measures of healthcare utilization, substance use, and general functioning. Challenges and recruitment adaptations pursuant to the COVID-19 pandemic are discussed.

Conclusions

This study could provide insights on how to reach people with untreated OUD and link them to care through non-traditional routes.

Trial Registration

The study is registered at ClinicalTrials.gov (NCT04991974).

Evaluating an addiction medicine unit in Sudbury, Ontario Canada: a mixed-methods study protocol

BACKGROUND

In response to the escalating global prevalence of substance use and the specific challenges faced in Northern Ontario, Canada, an Addiction Medicine Unit (AMU) was established at Health Sciences North (HSN) in Sudbury. This protocol outlines the approach for a comprehensive evaluation of the AMU, with the aim of assessing its impact on patient outcomes, healthcare utilization, and staff perspectives.

METHODS

We conducted a parallel mixed-method study that encompassed the analysis of single-center-level administrative health data and primary data collection, including a longitudinal observational study (target n = 1,200), pre- and post-admission quantitative interviews (target n = 100), and qualitative interviews (target n = 25 patients and n = 15 staff). We implemented a participatory approach to this evaluation, collaborating with individuals who possess lived or living expertise in drug use, frontline staff, and decision-makers across the hospital. Data analysis methods encompass a range of statistical techniques, including logistic regression models, Cox proportional hazards models, Kaplan-Meier curves, Generalized Estimating Equations (GEE), and thematic qualitative analysis, ensuring a robust evaluation of patient outcomes and healthcare utilization.

DISCUSSION

This protocol serves as the foundation for a comprehensive assessment designed to provide insights into the AMU's effectiveness in addressing substance use-related challenges, reducing healthcare disparities, and improving patient outcomes. All study procedures have been meticulously designed to align with the ethical principles outlined in the Tri-Council Policy Statement: Ethical Conduct for Research Involving Humans. The findings will be disseminated progressively through committees and working groups established for this research, and subsequently published in peer-reviewed journals. Anticipated outcomes include informing evidence-based healthcare decision-making and driving improvements in addiction treatment practices within healthcare settings.

Strategies to support substance use disorder care transitions from acute-care to community-based settings: a scoping review and typology

BACKGROUND

Acute-care interventions that identify patients with substance use disorders (SUDs), initiate treatment, and link patients to community-based services, have proliferated in recent years. Yet, much is unknown about the specific strategies being used to support continuity of care from emergency department (ED) or inpatient hospital settings to community-based SUD treatment. In this scoping review, we synthesize the existing literature on patient transition interventions, and form an initial typology of reported strategies.

METHODS

We searched Pubmed, Embase, CINAHL and PsychINFO for peer-reviewed articles published between 2000 and 2021 that studied interventions linking patients with SUD from ED or inpatient hospital settings to community-based SUD services. Eligible articles measured at least one post-discharge treatment outcome and included a description of the strategy used to promote linkage to community care. Detailed information was extracted on the components of the transition strategies and a thematic coding process was used to categorize strategies into a typology based on shared characteristics. Facilitators and barriers to transitions of care were synthesized using the Consolidated Framework for Implementation Research.

RESULTS

Forty-five articles met inclusion criteria. 62% included ED interventions and 44% inpatient interventions. The majority focused on patients with opioid (71%) or alcohol (31%) use disorder. The transition strategies reported across studies were heterogeneous and often not well described. An initial typology of ten transition strategies, including five pre- and five post-discharge transition strategies is proposed. The most common strategy was scheduling an appointment with a community-based treatment provider prior to discharge. A range of facilitators and barriers were described, which can inform efforts to improve hospital-to-community transitions of care.

CONCLUSIONS

Strategies to support transitions from acute-care to community-based SUD services, although critical for ensuring continuity of care, vary greatly across interventions and are inconsistently measured and described. More research is needed to classify SUD care transition strategies, understand their components, and explore which lead to the best patient outcomes.

Addiction Consult Service and Inpatient Outcomes Among Patients with Alcohol Use Disorder

BACKGROUND

Alcohol use disorder (AUD) is the most prevalent substance use disorder, but evidence-based medications to treat AUD (MAUD), including naltrexone and acamprosate, are substantially underutilized. Hospitalization provides an opportunity to start MAUD for patients who may not otherwise seek treatment. Addiction consultation services (ACSs) have been increasingly utilized to ensure appropriate treatment. There is little research examining the effect of an ACS on health outcomes among patients with AUD.

OBJECTIVE

To determine the association between an ACS consultation and provision of MAUD during admission and MAUD at discharge among admissions with AUD.

DESIGN

Retrospective study comparing admissions which received an ACS consult and propensity score-matched historical control admissions. Subjects A total of 215 admissions with a primary or secondary diagnosis of AUD who received an ACS consult and 215 matched historical control admissions. Intervention ACS consultation from a multidisciplinary team offering withdrawal management, substance use disorder treatment, patient-centered counseling, discharge planning, and linkage to outpatient care for patients with substance use disorders, including AUD. Main Measures Primary outcomes were initiation of new MAUD during admission and new MAUD at discharge. Secondary outcomes were patient-directed discharge, time to 7- and 30-day readmission, and time to 7- and 30-day post-discharge ER visit. Key Results Among 430 admissions with AUD, those that received an ACS consultation were significantly more likely to receive new inpatient MAUD (33.0% vs 0.9%; OR 52.5 [CI 12.6-218.6]) and significantly more likely to receive new MAUD at discharge (41.4% vs 1.9%; OR 37.3 [13.3-104.6]), compared with historical controls. ACS was not significantly associated with patient-directed discharge, time to readmission, or time to post-discharge ER visit.

CONCLUSIONS

ACS was associated with a large increase in provision of new inpatient MAUD and new MAUD at discharge when compared to propensity-matched historical controls.

Hospitalization and Housing: A Qualitative Study Exploring the Perspectives of Hospitalized Patients Experiencing Housing Insecurity

Although housing insecurity has clear negative impacts on health, little is known about how it impacts patients' experience of hospitalization. In this qualitative study, we interviewed 22 hospitalized patients experiencing housing insecurity. The following three major themes emerged: 1) adverse social and environmental factors directly contribute to hospitalization, 2) lack of tailored care during hospitalization leaves patients unprepared for discharge, and 3) patients have difficulty recuperating after a hospital stay, leading to the risk of rehospitalization. Within these themes, participants described the roles of extreme physical and psychological hardship, chaotic interpersonal relationships, substance use, and stigma affecting participants' experiences before, during, and following hospitalization. Our results, based directly on the patient experience, suggest a need for hospital systems to invest in universal in-hospital screening for housing insecurity, incorporation of trauma-informed care, and robust partnerships with community organizations. Future research should explore the feasibility and impact of these interventions.

Barriers to initiate buprenorphine and methadone for opioid use disorder treatment with postdischarge treatment linkage

BACKGROUND

Hospitals are an essential site of care for people with opioid use disorder (OUD). Buprenorphine and methadone are underutilized in the hospital.

OBJECTIVES

Characterize barriers to in-hospital buprenorphine or methadone initiation to inform implementation strategies to increase OUD treatment provision.

DESIGN, SETTINGS, AND PARTICIPANTS

Survey of hospital-based clinicians' perceptions of OUD treatment from 12 hospitals conducted between June 2022 and August 2022.

MEASURES

Survey questions were grouped into six domains: (1) evidence to treat OUD, (2) hospital processes to treat OUD, (3) buprenorphine or methadone initiation, (4) clinical practices to treat OUD, (5) leadership prioritization of OUD treatment, and (6) job satisfaction. Likert responses were dichotomized and associations between "readiness" to initiate buprenorphine or methadone and each domain were assessed.

RESULTS

Of 160 respondents (60% response rate), 72 (45%) reported higher readiness to initiate buprenorphine compared to methadone, 55 (34%). Respondents with higher readiness to initiate medications for OUD were more likely to perceive that evidence supports the use of buprenorphine and methadone to treat OUD (p < .001), to perceive fewer barriers to treat OUD (p < .001), to incorporate OUD treatment into their clinical practice (p < .001), to perceive leadership support for OUD treatment (p < .007), and to have great job satisfaction (p < .04). Clinicians reported that OUD treatment protocols with treatment linkage, increased education, and addiction specialist support would facilitate OUD treatment provision.

CONCLUSION

Interventions that incorporate protocols to initiate medications for OUD, include addiction specialist support and education, and ensure postdischarge OUD treatment linkage could facilitate hospital-based OUD treatment provision.

Critical care for patients with substance use disorders

PURPOSE OF REVIEW

To examine the impact of substance use disorders (SUDs) on critical illness and the role of critical care providers in treating SUDs. We discuss emerging evidence supporting hospital-based addiction treatment and highlight the clinical and research innovations needed to elevate the standards of care for patients with SUDs in the intensive care unit (ICU) amidst staggering individual and public health consequences.

RECENT FINDINGS

Despite the rapid increase of SUDs in recent years, with growing implications for critical care, dedicated studies focused on ICU patients with SUDs remain scant. Available data demonstrate SUDs are major risk factors for the development and severity of critical illness and are associated with poor outcomes. ICU patients with SUDs experience mutually reinforcing effects of substance withdrawal and pain, which amplify risks and consequences of delirium, and complicate management of comorbid conditions. Hospital-based addiction treatment can dramatically improve the health outcomes of hospitalized patients with SUDs and should begin in the ICU.

SUMMARY

SUDs have a significant impact on critical illness and post-ICU outcomes. High-quality cohort and treatment studies designed specifically for ICU patients with SUDs are needed to define best practices and improve health outcomes in this vulnerable population.

Promoting alcohol treatment engagement post-hospitalization with brief intervention, medications and CBT4CBT: protocol for a randomized clinical trial in a diverse patient population

BACKGROUND

Alcohol use disorder (AUD) commonly causes hospitalization, particularly for individuals disproportionately impacted by structural racism and other forms of marginalization. The optimal approach for engaging hospitalized patients with AUD in treatment post-hospital discharge is unknown. We describe the rationale, aims, and protocol for Project ENHANCE (ENhancing Hospital-initiated Alcohol TreatmeNt to InCrease Engagement), a clinical trial testing increasingly intensive approaches using a hybrid type 1 effectiveness-implementation approach.

METHODS

We are randomizing English and/or Spanish-speaking individuals with untreated AUD (n = 450) from a large, urban, academic hospital in New Haven, CT to: (1) Brief Negotiation Interview (with referral and telephone booster) alone (BNI), (2) BNI plus facilitated initiation of medications for alcohol use disorder (BNI + MAUD), or (3) BNI + MAUD + initiation of computer-based training for cognitive behavioral therapy (CBT4CBT, BNI + MAUD + CBT4CBT). Interventions are delivered by Health Promotion Advocates. The primary outcome is AUD treatment engagement 34 days post-hospital discharge. Secondary outcomes include AUD treatment engagement 90 days post-discharge and changes in self-reported alcohol use and phosphatidylethanol. Exploratory outcomes include health care utilization. We will explore whether the effectiveness of the interventions on AUD treatment engagement and alcohol use outcomes differ across and within racialized and ethnic groups, consistent with disproportionate impacts of AUD. Lastly, we will conduct an implementation-focused process evaluation, including individual-level collection and statistical comparisons between the three conditions of costs to providers and to patients, cost-effectiveness indices (effectiveness/cost ratios), and cost-benefit indices (benefit/cost ratios, net benefit [benefits minus costs). Graphs of individual- and group-level effectiveness x cost, and benefits x costs, will portray relationships between costs and effectiveness and between costs and benefits for the three conditions, in a manner that community representatives also should be able to understand and use.

CONCLUSIONS

Project ENHANCE is expected to generate novel findings to inform future hospital-based efforts to promote AUD treatment engagement among diverse patient populations, including those most impacted by AUD.

CLINICAL TRIAL REGISTRATION

Clinicaltrials.gov identifier: NCT05338151.

Response to substance use during hospitalization: A survey study of current and ideal policies and practices

People may use nonprescribed substances during an acute hospitalization. Hospital policies and responses can be stigmatizing, involve law enforcement, and lead to worse patient outcomes, including patient-directed discharge. In the United States, there is currently little data on hospital policies that address the use of substances during hospitalization. In this cross-sectional study, we surveyed clinicians at US hospitals with Accreditation Council of Graduate Medical Education (ACGME)-accredited addiction medicine fellowships about their current practices and policies and what they would include in an ideal policy. We had 77 responses from 55 out of 86 ACGME-addiction medicine fellowships (63.9%). Respondents identified policies at 21.8% of the institutions surveyed. Current responses to inpatient substance use vary, though most do not match what clinicians identify as an ideal response. Our results suggest that the use of nonprescribed substances during a hospitalization may be common, but a majority of hospitals likely do not have patient-centered policies to address this.

A Peer Recovery Coach Intervention for Hospitalized Patients with Opioid Use Disorder: A Pilot Randomized Controlled Trial

OBJECTIVES

Patients with opioid use disorder (OUD) are increasingly being hospitalized for acute medical illnesses. Despite initiation of medications for OUD (MOUDs), many discontinue treatment after discharge. To evaluate whether a psychosocial intervention can improve MOUD retention after hospitalization, we conducted a pilot randomized controlled trial of a peer recovery coach intervention.

METHODS

An existing peer recovery coach intervention was adapted for this trial. Hospitalized adults with OUD receiving MOUD treatment were randomized to receive either a recovery coach intervention or treatment-as-usual. For those in the intervention arm, the coach guided the participant to complete a relapse prevention plan, maintained contact throughout the 6-month follow-up period, encouraged MOUD continuation, and helped to identify community resources. Those receiving treatment-as-usual were discharged with a referral to outpatient treatment. Primary outcome was retention in MOUD treatment at 6 months. Secondary outcomes were the proportion of participants readmitted to the hospital and the number of days until treatment discontinuation and to hospital readmission.

RESULTS

Twenty-five individuals who provided consent and randomized to the recovery coach intervention (n = 13) or treatment-as-usual (n = 12) were included in the analysis. No significant differences were found in the proportion of participants retained in MOUD treatment at 6 months (38.5% vs 41.7%, P = 0.87), proportion of participants readmitted at 6 months (46.2% vs 41.2%, P = 0.82), or the time to treatment discontinuation (log-rank P = 0.92) or readmission (log-rank P = 0.85).

CONCLUSIONS

This pilot trial failed to demonstrate that a recovery coach intervention improved MOUD treatment retention compared with treatment-as-usual among hospitalized individuals with OUD.

Association of Early Opioid Withdrawal Treatment Strategy and Patient-Directed Discharge Among Hospitalized Patients with Opioid Use Disorder

BACKGROUND

Medical hospitalizations for people with opioid use disorder (OUD) frequently result in patient-directed discharges (PDD), often due to untreated pain and withdrawal.

OBJECTIVE

To investigate the association between early opioid withdrawal management strategies and PDD.

DESIGN

Retrospective cohort study using three datasets representing 362 US hospitals.

PARTICIPANTS

Adult patients hospitalized between 2009 and 2015 with OUD (as identified using ICD-9-CM codes or inpatient buprenorphine administration) and no PDD on the day of admission.

INTERVENTIONS

Opioid withdrawal management strategies were classified based on day-of-admission receipt of any of the following treatments: (1) medications for OUD (MOUD) including methadone or buprenorphine, (2) other opioid analgesics, (3) adjunctive symptomatic medications without opioids (e.g., clonidine), and (4) no withdrawal treatment.

MAIN MEASURES

PDD was assessed as the main outcome and hospital length of stay as a secondary outcome.

KEY RESULTS

Of 6,715,286 hospitalizations, 127,158 (1.9%) patients had OUD and no PDD on the day of admission, of whom 7166 (5.6%) had a later PDD and 91,051 (71.6%) patients received some early opioid withdrawal treatment (22.3% MOUD; 43.4% opioid analgesics; 5.9% adjunctive medications). Compared to no withdrawal treatment, MOUD was associated with a lower risk of PDD (adjusted odds ratio [aOR] = 0.73, 95%CI 0.68-0.8, p < .001), adjunctive treatment alone was associated with higher risk (aOR = 1.13, 95%CI: 1.01-1.26, p = .031), and treatment with opioid analgesics alone was associated with similar risk (aOR 0.95, 95%CI: 0.89-1.02, p = .148). Among those with PDD, both MOUD (adjusted incidence rate ratio [aIRR] = 1.24, 95%CI: 1.17-1.3, p < .001) and opioid analgesic treatments (aIRR = 1.39, 95%CI: 1.34-1.45, p < .001) were associated with longer hospital stays.

CONCLUSIONS

MOUD was associated with decreased risk of PDD but was utilized in < 1 in 4 patients. Efforts are needed to ensure all patients with OUD have access to effective opioid withdrawal management to improve the likelihood they receive recommended hospital care.

Impact of an opioid use disorder consult service on hospitalized trauma patients with opioid use disorder

BACKGROUND

Opioid use disorder (OUD) is common in the hospitalized trauma population, being a comorbid diagnosis in approximately 1% of operative trauma cases. The impact of an addiction consult service in this population has been less well studied but may lead to increased provision of evidence-based OUD treatment and improved postdischarge outcomes.

METHODS

One hundred thirteen patients with an International Classification of Diseases diagnosis of OUD who were admitted to the trauma service at a single academic hospital between January 2020 to December 2021 were included in a retrospective chart review. Wilcoxon rank-sum tests were used to evaluate differences between patients who received an OUD consult and those who did not. Regression analysis was used to assess differences in postdischarge acute care utilization, attendance of follow-up appointments, initiation of and discharge on medication for opioid use disorder (MOUD), naloxone prescribing at discharge, and length of stay (LOS) between the consult and no-consult groups.

RESULTS

Eighty-one patients in the study population received a consult and 32 did not. Patients in the consult group were more likely to have started MOUD during their admission (odds ratio [OR], 2.09; p < 0.001), be discharged with naloxone (OR, 1.89; p < 0.001), have a plan in place for continued OUD treatment at discharge (OR, 1.43; p < 0.001), and attend scheduled follow-up appointments with the trauma team (OR, 1.76; p = 0.02). Differences in acute care utilization and LOS between the two groups were not statistically significant.

CONCLUSION

An OUD consult service can provide benefit to hospitalized trauma patients by increasing likelihood of starting MOUD, of discharging with MOUD and naloxone, and of attending trauma follow-up appointments without increasing LOS or acute care utilization. Thus, addiction consult service interventions during hospital admissions for trauma may serve to facilitate both evidence-based OUD care and posthospitalization trauma care.

LEVEL OF EVIDENCE

Therapeutic/Care Management; Level IV.

Non-overdose acute care hospitalizations for opioid use disorder among commercially-insured adults: a retrospective cohort study

BACKGROUND

Acute care inpatient admissions outside of psychiatric facilities have been increasingly identified as a critical touchpoint for opioid use disorder (OUD) treatment. We sought to describe non-opioid overdose hospitalizations with documented OUD and examine receipt of post-discharge outpatient buprenorphine.

METHODS

We examined acute care hospitalizations with an OUD diagnosis in any position within US commercially-insured adults age 18-64 years (IBM MarketScan claims, 2013-2017), excluding opioid overdose diagnoses. We included individuals with ≥ 6 months of continuous enrollment prior to the index hospitalization and ≥ 10 days following discharge. We described demographic and hospitalization characteristics, including outpatient buprenorphine receipt within 10 days of discharge.

RESULTS

Most (87%) hospitalizations with documented OUD did not include opioid overdose. Of 56,717 hospitalizations (49,959 individuals), 56.8% had a primary diagnosis other than OUD, 37.0% had documentation of an alcohol-related diagnosis code, and 5.8% end in a self-directed discharge. Where opioid use disorder was not the primary diagnosis, 36.5% were due to other substance use disorders, and 23.1% were due to psychiatric disorders. Of all non-overdose hospitalizations who had prescription medication insurance coverage and who were discharged to an outpatient setting (n = 49, 237), 8.8% filled an outpatient buprenorphine prescription within 10 days of discharge.

CONCLUSIONS

Non-overdose OUD hospitalizations often occur with substance use disorders and psychiatric disorders, and very few are followed by timely outpatient buprenorphine. Addressing the OUD treatment gap during hospitalization may include implementing medication for OUD for inpatients with a broad range of diagnoses.

Pilot randomized controlled trial of a hospital-based substance use treatment and recovery team (START) to improve initiation of medication for alcohol or opioid use disorder and linkage to follow-up care

OBJECTIVES

We conducted a pilot randomized controlled trial (RCT) to explore whether a hospital inpatient addiction consult team (Substance Use Treatment and Recovery Team [START]) based on collaborative care was feasible, acceptable to patients, and whether it could improve uptake of medication in the hospital and linkage to care after discharge, as well as reduce substance use and hospital readmission. The START consisted of an addiction medicine specialist and care manager who implemented a motivational and discharge planning intervention.

METHODS

We randomized inpatients age ≥ 18 with a probable alcohol or opioid use disorder to receive START or usual care. We assessed feasibility and acceptability of START and the RCT, and we conducted an intent-to-treat analysis on data from the electronic medical record and patient interviews at baseline and 1-month postdischarge. The study compared RCT outcomes (medication for alcohol or opioid use disorder, linkage to follow-up care after discharge, substance use, hospital readmission) between arms by fitting logistic and linear regression models.

FINDINGS

Of 38 START patients, 97 % met with the addiction medicine specialist and care manager; 89 % received ≥8 of 10 intervention components. All patients receiving START found it to be somewhat or very acceptable. START patients had higher odds of initiating medication during the inpatient stay (OR 6.26, 95 % CI = 2.38-16.48, p < .001) and being linked to follow-up care (OR 5.76, 95 % CI = 1.86-17.86, p < .01) compared to usual care patients (N = 50). The study found no significant differences between groups in drinking or opioid use; patients in both groups reported using fewer substances at the 1-month follow-up.

CONCLUSIONS

Pilot data suggest START and RCT implementation are feasible and acceptable and that START may facilitate medication initiation and linkage to follow-up for inpatients with an alcohol or opioid use disorder. A larger trial should assess effectiveness, covariates, and moderators of intervention effects.

Strategies to support substance use disorder care transitions from acute-care to community-based settings: A Scoping review and typology

Background

Acute-care interventions that identify patients with substance use disorders (SUDs), initiate treatment, and link patients to community-based services, have proliferated in recent years. Yet, much is unknown about the specific strategies being used to support continuity of care from emergency department (ED) or inpatient hospital settings to community-based SUD treatment. In this scoping review, we synthesize the existing literature on patient transition interventions, and form an initial typology of reported strategies.

Methods

We searched Pubmed, Embase, CINAHL and PsychINFO for peer-reviewed articles published between 2000-2021 that studied interventions linking SUD patients from ED or inpatient hospital settings to community-based SUD services. Eligible articles measured at least one post-discharge treatment outcome and included a description of the strategy used to promote linkage to community care. Detailed information was extracted on the components of the transition strategies and a thematic coding process was used to categorize strategies into a typology based on shared characteristics. Facilitators and barriers to transitions of care were synthesized using the Consolidated Framework for Implementation Research.

Results

Forty-five articles met inclusion criteria. 62% included ED interventions and 44% inpatient interventions. The majority focused on patients with opioid (71%) followed by alcohol (31%) use disorder. The transition strategies reported across studies were heterogeneous and often not well described. An initial typology of ten transition strategies, including five pre- and five post-discharge transition strategies is proposed. The most common strategy was scheduling an appointment with a community-based treatment provider prior to discharge. A range of facilitators and barriers were described, which can inform efforts to improve hospital-to-community transitions of care.

Conclusions

Strategies to support transitions from acute-care to community-based SUD services, although critical for ensuring continuity of care, vary greatly across interventions and are inconsistently measured and described. More research is needed to classify SUD care transition strategies, understand their components, and explore which lead to the best patient outcomes.

Low dose IV buprenorphine inductions for patients with opioid use disorder and concurrent pain: a retrospective case series

BACKGROUND

Hospitalizations are a vital opportunity for the initiation of life-saving opioid agonist therapy (OAT) for patients with opioid use disorder. A novel approach to OAT initiation is the use of IV buprenorphine for low dose induction, which allows patients to immediately start buprenorphine at any point in a hospitalization without stopping full agonist opioids or experiencing significant withdrawal.

METHODS

This is a retrospective case series of 33 patients with opioid use disorder concurrently treated with full agonist opioids for pain who voluntarily underwent low dose induction at a tertiary academic medical center. Low dose induction is the process of initiating very low doses of buprenorphine at fixed intervals with gradual dose increases in patients who recently received or are simultaneously treated with full opioid agonists. Our study reports one primary outcome: successful completion of the low dose induction (i.e. transitioned from low dose IV buprenorphine to sublingual buprenorphine-naloxone) and three secondary outcomes: discharge from the hospital with buprenorphine-naloxone prescription, self-reported pain scores, and nursing-assessed clinical opiate withdrawal scale (COWS) scores over a 6-day period, using descriptive statistics. COWS and pain scores were obtained from day 0 (prior to starting the low dose induction) to day 5 to assess the effect on withdrawal symptoms and pain control.

RESULTS

Thirty patients completed the low dose induction (30/33, 90.9%). Thirty patients (30/33, 90.9%) were discharged with a buprenorphine prescription. Pain and COWS scores remained stable over the course of the study period. Mean COWS scores for all patients were 2.6 (SD 2.8) on day 0 and 1.6 (SD 2.6) on day 5. Mean pain scores for all patients were 4.4 (SD 2.1) on day 0 and 3.5 on day 5 (SD 2.1).

CONCLUSIONS

This study found that an IV buprenorphine low dose induction protocol was well-tolerated by a group of 33 hospitalized patients with opioid use disorder with co-occurring pain requiring full agonist opioid therapy. COWS and pain scores improved for the majority of patients. This is the first case series to report mean daily COWS and pain scores over an extended period throughout a low dose induction process.

Building an inpatient addiction medicine consult service in Sudbury, Canada: preliminary data and lessons learned in the era of COVID-19

OBJECTIVE

The goal of this study was to (1) Describe the patient population of a newly implemented addiction medicine consult service (AMCS); (2) Evaluate referrals to community-based addiction support services and acute health service use, over time; (3) Provide lessons learned.

METHODS

A retrospective observational analysis was conducted at Health Sciences North in Sudbury, Ontario, Canada, with a newly implemented AMCS from November 2018 and July 2021. Data were collected using the hospital's electronic medical records. The outcomes measured included the number of emergency department visits, inpatient admissions, and re-visits over time. An interrupted time-series analysis was performed to measure the effect of AMCS implementation on acute health service use at Health Sciences North.

RESULTS

A total of 833 unique patients were assessed through the AMCS. A total of 1,294 referrals were made to community-based addiction support services, with the highest proportion of referrals between August and October 2020. The post-intervention trend for ED visits, ED re-visits, ED length of stay, inpatient visits, re-visits, and inpatient length of stay did not significantly differ from the pre-intervention period.

CONCLUSION

Implementation of an AMCS provides a focused service for patients using with substance use disorders. The service resulted in a high referral rate to community-based addiction support services and limited changes in health service usage.

Substance abuse screening prior to bariatric surgery: an MBSAQIP cohort study evaluating frequency and factors associated with screening

INTRODUCTION

Patients undergoing bariatric surgery experience substantial risk of pre- and postoperative substance use. Identifying patients at risk for substance use using validated screening tools remains crucial to risk mitigation and operative planning. We aimed to evaluate proportion of bariatric surgery patients undergoing specific substance abuse screening, factors associated with screening and the relationship between screening and postoperative complications.

METHODS

The 2021 MBSAQIP database was analyzed. Bivariate analysis was performed to compare factors between groups who were screened for substance abuse versus non-screened, and to compare frequency of outcomes. Multivariate logistic regression analysis was performed to assess the independent effect of substance screening on serious complications and mortality, and to assess factors associated with substance abuse screening.

RESULTS

A total of 210, 804 patients were included, with 133,313 (63.2%) undergoing screening and 77,491 (36.8%) who did not. Those who underwent screening were more likely to be white, non-smoker, and have more comorbidities. The frequency of complications was not significant (e.g., reintervention, reoperation, leak) or similar (readmission rates 3.3% vs. 3.5%) between screened and not screened groups. On multivariate analysis, lower substance abuse screening was not associated with 30-day death or 30-day serious complication. Factors that significantly affected likelihood of being screened for substance abuse included being black (aOR 0.87, p < 0.001) or other race (aOR 0.82, p < 0.001) compared to white, being a smoker (aOR 0.93, p < 0.001), having a conversion or revision procedure (aOR 0.78, p < 0.001; aOR 0.64, p < 0.001, respectively), having more comorbidities and undergoing Roux-en-y gastric bypass (aOR 1.13, p < 0.001).

CONCLUSION

There remains significant inequities in substance abuse screening in bariatric surgery patients regarding demographic, clinical, and operative factors. These factors include race, smoking status, presence of preoperative comorbidities, and procedure type. Further awareness and initiatives highlighting the importance of identifying at risk patients is critical for ongoing outcome improvement.

Integrating Ambulatory Addiction Consultation Service Into a Community Mental Health Center

Despite the escalation in substance related overdose mortality-culminating in more than 100,000 deaths in each of the first 2 years of the COVID-19 pandemic-healthcare systems have not kept up with the demands for care among people who use drugs. There remains a significant gap in access to evidence-based treatment. The addiction consult services has served to address this gap, as a critical intervention that engages mostly hospitalized patients and initiate addiction treatment in acute settings, but little is known about addiction consult services in ambulatory settings. This model of care could potentially serve to scale up the care for people who use drugs in the community by embedding the limited number of addiction professionals within existing ambulatory systems, thus extending their reach. We describe here an innovative, yet simple and potentially replicable model for an ambulatory addiction consultation service in a large, advanced community mental health center.

Transitions in care between hospital and community settings for individuals with a substance use disorder: A systematic review

BACKGROUND AND AIMS

Individuals with a substance use disorder (SUD) have high rates of hospital service utilization including emergency department (ED) presentations and hospital admissions. Acute care settings offer a critical opportunity to engage individuals in addiction care and improve health outcomes especially given that the period of transition from hospital to community is challenging. This review summarizes literature on interventions for optimizing transitions in care from hospital to community for individuals with a SUD.

METHODS

The literature search focused on key terms associated with transitions in care and SUD. The search was conducted on three databases: MEDLINE, CINAHL, and PsychInfo. Eligible studies evaluated interventions acting prior to or during transitions in care from hospital to community and reported post-discharge engagement in specialized addiction care and/or return to hospital and were published since 2010.

RESULTS

Title and abstract screening were conducted for 2337 records. Overall, 31 studies met inclusion criteria, including 7 randomized controlled trials and 24 quasi-experimental designs which focused on opioid use (n = 8), alcohol use (n = 5), or polysubstance use (n = 18). Interventions included pharmacotherapy initiation (n = 7), addiction consult services (n = 9), protocol implementation (n = 3), screening, brief intervention, and referral to treatment (n = 2), patient navigation (n = 4), case management (n = 1), and recovery coaching (n = 3).

CONCLUSIONS

Both pharmacologic and psychosocial interventions implemented around transitions from acute to community care settings can improve engagement in care and reduce hospital readmission and ED presentations. Future research should focus on long-term health and social outcomes to improve quality of care for individuals with a SUD.

Infective endocarditis in people who inject drugs: A scoping review of clinical guidelines

BACKGROUND

The incidence of infective endocarditis (IE) among people who inject drugs (PWID) is rising worldwide. Multiple clinical guidelines differ on the management of this condition, and few guidelines comment on treatment for primary substance use disorder (SUD). A comprehensive comparison of these guidelines is lacking.

OBJECTIVES

To perform a critical review identifying key differences in clinical guideline recommendations for treating IE among PWID, focusing on the inclusion of recommendations for SUD treatment and the presence of stigmatizing language.

ELIGIBILITY CRITERIA

Recently published, English-language, society-developed clinical guidelines for the treatment of IE among PWID.

SOURCES OF EVIDENCE

PubMed, Google Scholar, and CINAHL Plus databases.

CHARTING METHODS

In line with Arksey and O'Malley's framework, a scoping review was adapted using Joanna Briggs Institute and PRISMA-ScR guidelines. Two reviewers independently performed database searches for clinical guidelines published between 2007 and 2020 that commented on the management of IE among PWID.

RESULTS

Ten clinical guidelines were included in the final analysis. Treatment recommendations varied with some societies proposing nonstandard care due to concern for return to drug use. Three guidelines include reference to addiction treatment. Only one guideline specifies the use of opioid agonist therapy for treating opioid use disorder and identifies the benefits of an addiction specialist consultation. Acute withdrawal management is not mentioned in any guideline. All guidelines utilized stigmatizing language to describe PWID.

CONCLUSIONS

Most guidelines do not address SUD treatment, despite its effectiveness in reducing adverse health outcomes. Future guidelines should address SUD treatment using patient-first language.